Dental vulcanizer.



PATENTED DEC. 6, 1904.

A. GOEBEL. DENTAL VULGANIZER.

APPLIUATION FILED MAY 18, 1904.

no MODEM UNTTED STATES Patented December 6, 1904;.

PATENT OFFICE.

DENTAL \IULCANIZER.

SPECIFICATION forming part of Letters Patent No. 776,833, dated December6, 1904. Application filed May 18, 1904. Serial No. 203.551. (N model.)

To (All whmn H; may concern:

Be it known that l, ALBERT Gonunt, a citizen oi the United States,residingat Camden,

tightly in place without the aid of a wrench,

and the construction is such that the operation of opening or closingthe lid may be accomplished quickly; and a further object of myimprovement is to provide means for adjusting the mechanism to take upany wear, so that the'lid may be secured upon the top of the boiler astightly as desired.

WVith these ends in View this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to theaccompanying drawings, forming a part of this specification, in Which-Figure 1 is a vertical section through the upper end of a vulcanizerhaving my improvement applied thereto; Fig. 2, a plan view of thevulcanizer.

A represents the body of the boiler.

B is a ring secured around the outside of the boiler near the upper endthereof, and pivoted to this ring at the point C is a lever D, whichextends upward vertically and then horizontally across the top of theboiler when the parts are in their normal position.

E is a lid which is provided with a cavity E upon its upper side, intowhich extends an ear D,extending downward from the horizontal portion ofthe lever D.

F is a pin extending transversely through the boss E of the lid, inwhich the cavity E is formed, and also through an opening 1) formedthrough the ear D. The opening I) is considerably larger in diameterthan the pin F, so as to allow for play. The horizontal portion of thelever 1) directly over the boss E" is curved downward, as represented atD and the lowest point of this portion contacts the boss E upon eachside of the cavity E, so that when the lever Dis pressed downward thepressure upon the lid is not exerted through the pin F, but through thedirect pressure of the lever D upon the boss. The lid E is provided withthe usual annular groove adapted to lit upon the upper rim of theboiler, suitable packing being located within the groove. It will thusbe seen that when the lever l) is thrown back the lid E will be carriedwith it, and when the lever is thrown downward into its normal positionthere will be sufficient play between the pin F and the wall. of thehole 1) to allow the lid to adjust itself to the upper rim of theboiler. G is a lug extending outward from the ring R diametricallyopposite from the point where the lever D is pivoted to said ring.

H is a stud threaded at its lower end extending downward through anopening formed through the lug Gr.

I is a nut threaded upon the lower end of the stud H below the lug Gr.

J represents two links, the lower ends of which are pivoted to the upperend of the stud H upon each side thereof, so as to leave a space betweenthe links suflicient to allow the outer end of the lever l) to entertherebetween.

K is an eccentric pivoted between the upper ends of the two links.

L is a handle secured to the eccentric for rotating the same. lt'willthus be seen that by rotating the eccentric the pressure can beincreased or diminished from the lever D, and when the pressure isremoved from the outer end of the lever l) the two links maybe thrownoutward by rocking them upon their lower pivot. Then the lever 1) isfree to be raised with the cover E, and when it is desired to secure thecover in place it is simply necessary to bring the links back so thatthe eccentric lies over the outer end ofthe lever. Then by rotating theeccentric by means of the handle L any degree of pressure can be appliedto the lever, and the eccentric will stay in any position placed.

By moving the nut I upon the threaded portion of the stud H the amountof pressure can be adjusted to a nicety. It will thus be seen that Ihave provided a cross-bar locking arrangement for dental vulcanizerswhich consists of exceedingly few parts, may be easily and quicklyoperated, will insure a tight connection at all times, and isexceedingly durable and efficient.

Of course I do not wish to be limited to the exact construction hereshown, as slight modifications could be made without departing from thespirit of my invention.

Having thus fully described my invention, what I claim as new and usefulis 1. In combination with a boiler of a dental vulcanizer, a lid adaptedto fit over the upper end of said boiler, a lever pivoted at one end tothe body of the boiler and normally extending across above the same andadapted to bear against the upper face of the lid, means for connectingthe lid to the lever so as to allow a certain amount of play between thetwo in all directions, a projection extending outward from the boilerdiametrically opposite to the pivotal point of the lever, a studextending downward through said projection, means for adjusting saidstud vertically, links pivoted to the upper end of said stud, aneccentric pivoted to the upper end of the links and adapted to bear uponthe outer end of the lever, and a handle for rotating the eccentric, asand for the purpose specified.

2., In combination with a boiler of a dental vulcanizer, a lever pivotedto the boiler and normally extending across the top thereof, a lidprovided with an annular groove formed in its lower face adapted to fitthe upper rim of the boiler, a boss extending upward from the lid, saidboss provided with a cavity, an ear extending downward from the leverinto said cavity, a pin extending transversely through the boss andthrough an opening in the ear, the lever adapted to bear upon the bossupon each side of the cavity, a lug extending outward from the boilerdiametrically opposite to the pivotal point of the lever, an eccentricadapted to bear downward against the outer end of the lever, hearings inwhich said eccentric is pivoted, said bearings pivoted to the lug, meansfor adjusting the eccentric vertically, and a handle secured to theeccentric for rotating the same, as and for the purpose specified.

3. In combination with a boiler of a dental vulcanizer, a lever pivotedto the boiler, said lever extending across the top of the boilerhorizontally when the boiler is closed, a lid provided with a suitablegroove, and packing adapted to fit over the upper rim of the boiler, aboss extending upward from the lid, said boss provided with a cavityformed downward into the same, an ear formed with the lever ex; tendingdownward into the cavity, a pin extending transversely through the bossand through the ear, the opening through the ear being considerablylarger in diameter than the pin, the lever adapted to bear upon theupper surface of the boss, a lug extending outward from the boilerdiametrically opposite the pivotal point of the lever, a stud extendingdownward. through the opening provided in the boss, a nut threaded uponthe lower end of the stud below the lug, two links pivoted at theirlower ends to the upper end of the stud upon each side thereof, theouter end of the lever adapted to enter between the links, an eccentricpivoted in between the up-' per end of the links and adapted to beardownward against the outer end of the lever, and a handle for rotatingthe eccentric, as specified.

In testimony whereof I have hereunto affixed my signature in thepresence of two subscribing witnesses.

ALBERT GOEBEL.

l/Vitnesses:

MARY E. HAMER, L. WV. MORRISON.

